feat(ophyd): temporary until new Ophyd release, prevent Status objects threads

Monkey-patching of Ophyd library

tests/test_ophyd_status_obj.py

@@ -0,0 +1,51 @@
+import pytest
+import threading
+import time
+
+from unittest.mock import Mock
+
+import ophyd_devices  # ensure we are patched
+from ophyd.status import StatusBase, StatusTimeoutError
+
+
+def test_ophyd_status_patch():
+    cb = Mock()
+
+    st = StatusBase(timeout=1)
+    assert isinstance(st._callback_thread, threading.Thread)
+    st.add_callback(cb)
+    with pytest.raises(StatusTimeoutError):
+        time.sleep(1.1)
+        st.wait()
+    cb.assert_called_once()
+    cb.reset_mock()
+
+    st = StatusBase()
+    assert isinstance(st._callback_thread, Mock)
+    st.add_callback(cb)
+    st.set_finished()
+    cb.assert_called_once()
+    cb.reset_mock()
+    st.wait()
+
+    st = StatusBase(settle_time=1)
+    st.add_callback(cb)
+    assert isinstance(st._callback_thread, Mock)
+    st.set_finished()
+    assert cb.call_count == 0
+    time.sleep(0.5)
+    assert cb.call_count == 0  # not yet!
+    time.sleep(0.6)
+    cb.assert_called_once()
+    cb.reset_mock()
+    st.wait()
+
+    class TestException(RuntimeError):
+        pass
+
+    st = StatusBase()
+    st.add_callback(cb)
+    st.set_exception(TestException())
+    cb.assert_called_once()
+    with pytest.raises(TestException):
+        st.wait()